diff --git a/core/lib/Drupal/Core/Controller/ControllerBase.php b/core/lib/Drupal/Core/Controller/ControllerBase.php
index 3947f03..fae15e9 100644
--- a/core/lib/Drupal/Core/Controller/ControllerBase.php
+++ b/core/lib/Drupal/Core/Controller/ControllerBase.php
@@ -55,15 +55,6 @@ protected function keyValueExpirable($collection) {
   }
 
   /**
-   * Returns the locking layer instance.
-   *
-   * @return \Drupal\Core\Lock\LockBackendInterface
-   */
-  protected function lock() {
-    return $this->container->get('lock');
-  }
-
-  /**
    * Retrieves a configuration object.
    *
    * This is the main entry point to the configuration API. Calling
@@ -83,32 +74,6 @@ protected function config($name) {
   }
 
   /**
-   * Returns a queue for the given queue name.
-   *
-   * The following variables can be set by variable_set or $conf overrides:
-   * - queue_class_$name: The class to be used for the queue $name.
-   * - queue_default_class: The class to use when queue_class_$name is not
-   *   defined. Defaults to \Drupal\Core\Queue\System, a reliable backend using
-   *   SQL.
-   * - queue_default_reliable_class: The class to use when queue_class_$name is
-   *   not defined and the queue_default_class is not reliable. Defaults to
-   *   \Drupal\Core\Queue\System.
-   *
-   * @param string $name
-   *   The name of the queue to work with.
-   * @param bool $reliable
-   *   (optional) TRUE if the ordering of items and guaranteeing every item
-   *   executes at least once is important, FALSE if scalability is the main
-   *   concern. Defaults to FALSE.
-   *
-   * @return \Drupal\Core\Queue\QueueInterface
-   *   The queue object for a given name.
-   */
-  protected function queue($name, $reliable = FALSE) {
-    return $this->container->get('queue')->get($name, $reliable);
-  }
-
-  /**
    * Returns a key/value storage collection.
    *
    * @param string $collection
@@ -136,16 +101,6 @@ protected function state() {
   }
 
   /**
-   * Returns the default http client.
-   *
-   * @return \Guzzle\Http\ClientInterface
-   *   A guzzle http client instance.
-   */
-  protected function httpClient() {
-    return $this->container->get('http_default_client');
-  }
-
-  /**
    * Returns the module handler.
    *
    * @return \Drupal\Core\Extension\ModuleHandlerInterface
@@ -165,13 +120,26 @@ protected function urlGenerator() {
   }
 
   /**
-   * Returns the string translation service.
-   *
-   * @return \Drupal\Core\StringTranslation\TranslationManager
-   *   The string translation manager.
+   * Translates a string to the current language or to a given language using
+   * the string translation service.
+   *
+   * @param string $string
+   *   A string containing the English string to translate.
+   * @param array $args
+   *   An associative array of replacements to make after translation. Based
+   *   on the first character of the key, the value is escaped and/or themed.
+   *   See \Drupal\Core\Utility\String::format() for details.
+   * @param array $options
+   *   An associative array of additional options, with the following elements:
+   *   - 'langcode': The language code to translate to a language other than
+   *      what is used to display the page.
+   *   - 'context': The context the source string belongs to.
+   *
+   * @return string
+   *   The translated string.
    */
-  protected function translation() {
-    return $this->container->get('string_translation');
+  protected function t($string, array $args = array(), array $options = array()) {
+    return $this->container->get('string_translation')->translate($string, $args, $options);
   }
 
   /**